DETERMINING TRANSMISSION LINE PARAMETERS FROM TIME-STAMPED DATA by Martin Grobler
... Electricity is the driving force behind industry and subsequently the economy. This very important commodity is transported from power generation to the end user by means of overhead power lines. Within South Africa coal fired power stations are the main source of generation. The highveld is predomi ...
... Electricity is the driving force behind industry and subsequently the economy. This very important commodity is transported from power generation to the end user by means of overhead power lines. Within South Africa coal fired power stations are the main source of generation. The highveld is predomi ...
Improving the Stability of Cascaded DC/DC Converter Systems via
... converter’s input impedance, when ensuring the stability of the cascaded system and good dynamic performance of the load converter, simultaneously. In [25], one solution of this contradictory issue is presented by developing the regulation signal maps of the source converter into the regulation loop ...
... converter’s input impedance, when ensuring the stability of the cascaded system and good dynamic performance of the load converter, simultaneously. In [25], one solution of this contradictory issue is presented by developing the regulation signal maps of the source converter into the regulation loop ...
Discussion on lightning impulse test procedure
... 1- "As I believe we may have discussed during the last meeting, the value of inductance we are using in our calculations is based on the 60 Hz parameters of the transformer. If we were able to calculate the effective value of this inductance in the impulse frequency range I believe it would be a hig ...
... 1- "As I believe we may have discussed during the last meeting, the value of inductance we are using in our calculations is based on the 60 Hz parameters of the transformer. If we were able to calculate the effective value of this inductance in the impulse frequency range I believe it would be a hig ...
When tow unshielded transmission lines are close together, power
... Multisection couplers of this form can achieve decade bandwidths. But coupling levels must be low. Because of the longer electrical length, it is more critical to have equal even and odd mode phase velocities than it is for the single section coupler. Mismatched phase velocities will degrade the co ...
... Multisection couplers of this form can achieve decade bandwidths. But coupling levels must be low. Because of the longer electrical length, it is more critical to have equal even and odd mode phase velocities than it is for the single section coupler. Mismatched phase velocities will degrade the co ...
Atmel ATR4251C Low-noise, High-dynamic-range AM/FM Antenna Amplifier IC Features
... AM Amplifier Due to the long wavelength in AM bands, the antennas used for AM reception in automotive applications must be short compared to the wavelength. Therefore these antennas do not provide 50Ω output impedance, but have an output impedance of some pF. If these (passive) antennas are connecte ...
... AM Amplifier Due to the long wavelength in AM bands, the antennas used for AM reception in automotive applications must be short compared to the wavelength. Therefore these antennas do not provide 50Ω output impedance, but have an output impedance of some pF. If these (passive) antennas are connecte ...
PROTECTIVE RELAYING FOR TRANSMISSION AND
... analysis of condition and remedial action is required to be taken so much so that it generally becomes humanly impossible to do so before taking place of damage to equipment / property and life. As such, special equipment referred as protective Gear equipment is required to be employed to sense the ...
... analysis of condition and remedial action is required to be taken so much so that it generally becomes humanly impossible to do so before taking place of damage to equipment / property and life. As such, special equipment referred as protective Gear equipment is required to be employed to sense the ...
Datasheet - Intersil
... equal to -2VCC . The charge pump accepts input voltages up to 5.5V. The output impedance of the voltage doubler section (V+) is approximately 200, and the output impedance of the voltage inverter section (V-) is approximately 450. A typical application uses 1µF capacitors for C1-C4, however, the v ...
... equal to -2VCC . The charge pump accepts input voltages up to 5.5V. The output impedance of the voltage doubler section (V+) is approximately 200, and the output impedance of the voltage inverter section (V-) is approximately 450. A typical application uses 1µF capacitors for C1-C4, however, the v ...
PE613010 and PE613050 Tuning Control Switches
... Peregrine Semiconductor’s UltraCMOS® PE613010 and PE613050 tuning control switches provide robust solutions to problems posed by today’s challenging environments for flexible wireless antenna systems. The requirement for supporting complex modulation schemes such as 4G LTE and 802.11ac OFDM, which a ...
... Peregrine Semiconductor’s UltraCMOS® PE613010 and PE613050 tuning control switches provide robust solutions to problems posed by today’s challenging environments for flexible wireless antenna systems. The requirement for supporting complex modulation schemes such as 4G LTE and 802.11ac OFDM, which a ...
Harmonic Filter Bank Tuning - Northeast Power Systems, Inc.
... then a de-tuned filter bank is the best choice. This filter will do little for removing any harmonic distortion present on the system but will allow the installation of a large capacitor bank without any adverse system interactions. De-tuned filter banks are less costly an are more reliable than par ...
... then a de-tuned filter bank is the best choice. This filter will do little for removing any harmonic distortion present on the system but will allow the installation of a large capacitor bank without any adverse system interactions. De-tuned filter banks are less costly an are more reliable than par ...
AN-610 - Fairchild
... of the signal duty cycle. Signals with lower duty cycles will dissipate less DC power. Since the load seen by the driving device is resistive, not capacitive, load capacitance does not affect power consumption. Therefore, parallel termination dissipates less AC power. Because of this lower AC power ...
... of the signal duty cycle. Signals with lower duty cycles will dissipate less DC power. Since the load seen by the driving device is resistive, not capacitive, load capacitance does not affect power consumption. Therefore, parallel termination dissipates less AC power. Because of this lower AC power ...
Radiation Noise Reduction Effect using Capacitor with
... Since the radiation noise from the electronic equipment is regulated in many countries, the effective techniques of radiated noise reduction is needed in the design and manufacturing fields of the equipment. It is well known that the radiated emission from the electronic equipment is often dominated ...
... Since the radiation noise from the electronic equipment is regulated in many countries, the effective techniques of radiated noise reduction is needed in the design and manufacturing fields of the equipment. It is well known that the radiated emission from the electronic equipment is often dominated ...
Nominal impedance
Nominal impedance in electrical engineering and audio engineering refers to the approximate designed impedance of an electrical circuit or device. The term is applied in a number of different fields, most often being encountered in respect of:The nominal value of the characteristic impedance of a cable or other form of transmission line.The nominal value of the input, output or image impedance of a port of a network, especially a network intended for use with a transmission line, such as filters, equalisers and amplifiers.The nominal value of the input impedance of a radio frequency antennaThe actual impedance may vary quite considerably from the nominal figure with changes in frequency. In the case of cables and other transmission lines, there is also variation along the length of the cable, if it is not properly terminated. It is usual practice to speak of nominal impedance as if it were a constant resistance, that is, it is invariant with frequency and has a zero reactive component, despite this often being far from the case. Depending on the field of application, nominal impedance is implicitly referring to a specific point on the frequency response of the circuit under consideration. This may be at low-frequency, mid-band or some other point and specific applications are discussed in the sections below.In most applications, there are a number of values of nominal impedance that are recognised as being standard. The nominal impedance of a component or circuit is often assigned one of these standard values, regardless of whether the measured impedance exactly corresponds to it. The item is assigned the nearest standard value.